Simplify.
A. xy2z4
B. xyz4
C. xyz15
D. xy2z5
Answer: D
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Find the derivative of y with respect to x, t, or ?, as appropriate.y = ln(x - 2)
A. 
B. 
C. - 
D. 
Write the decimal number that has the specified place values.3 tens, 9 ten-thousands, 4 hundredths, 4 ones, 1 ten-thousandths
A. 9034.0401 B. 90,034.041 C. 90,034.0401 D. 10,034.0409
Find the slope-intercept form of the equation of a line parallel or perpendicular to the given line and passing through the given point.Parallel to x + y = 12, through(2, 7)
A. y = -x + 9 B. y = -x - 9 C. y = x + 5 D. y = x - 5
Solve the problem.A drug is injected into a patient and the concentration of the drug is monitored. The drug's concentration, C(t), in milligrams after t hours is modeled by C(t) = 
.What is the end behavior of this function? Describe what this means in practical terms.
A. as x ? ?, C(x) ? 1.67; After 1.67 hours, the concentration of the drug is at its greatest. B. as x ? ?, C(x) ? 0.83; After 0.83 hours, the concentration of the drug is at its greatest. C. as x ? ?, C(x) ? 1.67; 1.67 is the final amount, in milligrams, of the drug that will be left in the patient's bloodstream. D. as x ? ?, C(x) ? 0; 0 is the final amount, in milligrams, of the drug that will be left in the patient's bloodstream.